Exact and approximate many-body dynamics with stochastic one-body density matrix evolution
نویسندگان
چکیده
منابع مشابه
Stochastic gauges in quantum dynamics for many-body simulations
Quantum dynamics simulations can be improved using novel quasiprobability distributions based on non-orthogonal hermitian kernel operators. This introduces arbitrary functions (gauges) into the stochastic equations, which can be used to tailor them for improved calculations. A possible application to full quantum dynamic simulations of BEC’s is presented.
متن کاملTime evolution of one-dimensional Quantum Many Body Systems
The level of current understanding of the physics of time-dependent strongly correlated quantum systems is far from complete, principally due to the lack of effective controlled approaches. Recently, there has been progress in the development of approaches for one-dimensional systems. We describe recent developments in the construction of numerical schemes for general (one-dimensional) Hamilton...
متن کاملConsistent Construction of Realistic One-body Density Matrix in Nuclei
A phenomenological method based on the natural orbital representation is applied to construct the ground state one-body density matrix which describes correctly both density and momentum distributions in He, O and Ca nuclei. The parameters of the matrix are fixed by a best fit to the experimental density distribution and to the correlated nucleon momentum distribution. The method allows the nat...
متن کاملDensity fluctuations in many-body systems
The characterization of density fluctuations in systems of interacting particles is of fundamental importance in the physical sciences. We present a formalism for studying local density fluctuations in two special subvolumes ~centered around either a reference particle or some arbitrary point in the system! termed particle and void regions, respectively. We present formal expressions for the pr...
متن کاملIntense-field many-body S-matrix theory
Intense-field many-body S-matrix theory (IMST) provides a systematic ab initio approach to investigate the dynamics of atoms and molecules interacting with intense laser radiation. We review the derivation of IMST as well as its diagrammatic representation and point out its advantage over the conventional ‘prior’ and ‘post’ expansions which are shown to be special cases of IMST. The practicalit...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review C
سال: 2005
ISSN: 0556-2813,1089-490X
DOI: 10.1103/physrevc.71.064322